Improvements relating to Pocket Magnetic Compasses

12,203. Somerset, C. W., and Bentley, A. F. C. May 24. Compasses, magnetic; prismatic and marching compasses.-Means for illuminating the dial of a pocket compass consists of a hood, cover, or cap, adapted for attachment to the compass and containing an electric lamp, the light from which is projecte...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ARTHUR FRED COLLINS BENTLEY, CHARLES WYNDHAM SOMERSET
Format:	Patent
Sprache:	eng
Schlagworte:	GYROSCOPIC INSTRUMENTS MEASURING MEASURING DISTANCES, LEVELS OR BEARINGS NAVIGATION PHOTOGRAMMETRY OR VIDEOGRAMMETRY PHYSICS SURVEYING TESTING
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